Don Johnson admits he is not the well-endowed male that put the “Johnson in Johnson.” While former flame Pamela De Barres wrote about Don’s physical prowess in her 1987 book, “I’m With the Band,” the “Miami Vice” and “Django Unchained” star told Rolling Stone: “Look, I’ve seen guys with a lot bigger than me. One time, I was in the Celtics locker room talking to Larry Bird and Kevin McHale . . . and there’s Dennis Johnson coming out of the showers and, dude, that’s who put the Johnson in Johnson. I mean, it must have shown on my face, because when I turned back to Larry, he looked at me and said, ‘I know, huh?’ and I was like, ‘Dude, that’s a weapon.’ ”